Question about 1999 Saab 9-5

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2003 Saab 9-5 Aero- Idling problem

My 9-5 aero has an idling problem. If you keep you foot on the gas, it will drive fine. I have replaced the fuel filter...No fix. I just installed a remanufactured throttle body and the car went into 'limp' mode. The remanufacture company said I need to reset the fault codes to get normal operation now. Is this true? How do you reset the fault codes??

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  • Speedbreaker Nov 03, 2008

    and the problem wasn't the throttle body. It was the Mass airflow sensor. I would look into that. It is a cheap fix most of the time as there is a cleaner that is made specifically for the MAF and won't mess it up. My car was the exact same and is now fine. As far as resetting the fault codes goes you can disconnect the battery for a few hours and that will do the trick everytime instead of having to pay for someone to use a tech 2. Try it out, let me know how it turns out.

  • seanrichardo Nov 03, 2008

    I have almost the same problem but I noticed on the back of the engine there was a oil leak caming from a screw (looks like a sensor o valve )but I dont know if this have to do something with this problem ,check engine ligth now is on..! please some body help me out with this..!

  • doug mckeown Apr 12, 2013

    Yes it is true , but if you disconect battery for a few hours it can reset it for you, hope this helps, good luck

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Sounds like car is in limp home mode which needs reseting ,which may indicate you need a new Di Rail, or throttle body. Is engine management light on all the time if so Needs reseting. Hope this helps.

Posted on Apr 12, 2013

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Hi! I have 2002 saab 95 aero 4 cylinder, first I used to have a high idling problem but I reset the throttle body and I change the mass air sensor, now I don't have a high idling problem car is running normal rpm but I have a so strong vibration specially when I put on drive my engine mouths are fine, but I don't know what else I can do to get it fix so please help me!! I love my car but this problem is really bothers me. and I still have check engine light on saying mass iar flow sensor but I just change that and my tempura is goes down to while im driving on the highway.

Posted on Mar 30, 2013

  • r_gonzalez08
    r_gonzalez08 Jan 27, 2014

    Did you ever figure out your problem

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I recently had the same problem, my 2002 9-5 Aero would die every time I came to a stop or put the clutch in. Replaced the Mass Air Flow Sensor and it doesn't die anymore, but it still runs a little rough when shifting and I still get the check engine light. I talked with a tech and he said that I disconnect the battery for a few hours it should clear the fault codes.

Posted on Nov 11, 2008

  • mjewson Nov 17, 2008

    Replaced the Mass Air Flow sensor, took off the positive battery cable, removed engine cover, and removed the throttle body cover. If you look at the throttle body from the passenger side at fender height, you will see a piece of cable/spring hanging out the bottom, gently take your forefinger from your left hand and push the cable towards the driver's side, while keeping this pushed to the driver's side, take your other hand with a screwdriver and gently push the black toothed disc counter clockwise until you hear a click. Reconnect the positive battery cable and test drive. Haven't has any problems since Friday. Here is a link to a illustration, does not help that much, but it give you an idea where everything is. Hope it helps.

    http://www.saabnet.com/tsn/bb/9-5/index....


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.turn the ignition on and clear def.codes with(tech2)
.turn the ignition off
.carefully slide the end of the spring tawords the throttle body using the point of a pen
.at the same time rotate the black tooth disc anticlockwise with a screwdriver.A click will be heard in its end position
.turn the pedal arm with throttle cable clockwise.Make sure that the throttle arm does not follow the movement of the pedal arm

Posted on Nov 02, 2008

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